S.C. Code Ann. § 59-2-90
(A) The Office of State Treasurer has authority to establish a comprehensive investment plan for the purposes of this chapter, to invest any funds of the trust fund in any instrument, obligation, security, or property that constitutes legal investments, and to name and use depositories for its investments and holdings. The comprehensive investment plan shall specify the investment policies to be utilized by the State Treasurer in its administration of the funds.
Notwithstanding any provisions of law, the Office of State Treasurer shall invest or cause to be invested amounts on deposit in the trust fund in a manner reasonable and appropriate to achieve the objectives of the program, exercising the discretion and care of a prudent person in similar circumstances with similar objectives. The Office of State Treasurer shall give due consideration to the risk, expected rate of return, term or maturity, diversification of total investments, liquidity, and anticipated investments in and withdrawals from the trust fund.